Improvement in means of operating steamboat-chimneys



J. BHRISTY.

Means for Operating Steamboat Chimneys.

.NO. 136,414. PatentedMarch 4,1873.

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AM, PHOT0-LITH06RAPHI6 00, N. Massamsls Pnacass) UNITED STATES PATENwOE.

JOHN OHRISTY, OF CINCINNATI, OHIO.

IMPROVEMENT IN MEANS OF OPERATING STEAMBOAT-CHIMNEVS.

Specification forming part of Letters Patent No. 136,414, dated March 4,1873.

To all whom it may concern:

Be it known that I, JOHN OHRIsrY, of Oincinnati," Hamilton county, Ohio,have invented a new and useful Device for Lowering and RaisingSteamboat-Chimneys, of which the following is aspecification:

Nature and Objects of the I iwent'ion.

My invention relates to a device for lowerin g and elevating, at will,the movable section or upper hinged member of a steamboat-chimney, mysaid device being cheap, simple, and easily operated by one or two men.

General Description.

Figure l is an elevation of, a steamboatchimney provided with myapparatus, the hinged member being in its normal or elevated position,and the screw-threaded tube of the apparatus shown in section. Fig. 2 isan elevation, showing the position the various parts assume when thehinged section is lowered.

A represents the lower or principal portion of the chimney. B is theupper or movable portion, secured by customary hinge O to the saidportion A. The movable section B has a lug, D, to which is hinged orpivoted the upper extremity of a tube, E, which may be composed of apiece of gas-pipe. The lower end of the tube E contains a nut or screwmyimprovement I may vary in nonessential particulars-for example, acapstan may replace the bevel-wheel K.

Claim.

I claim as new and of my invention- The combination of screw-threadedtube E, hinged or pivoted to the movable chimneysection B, andcontaining a screw, F, secured in a rocking frame, H, attached to thedeck or other stationary object upon the boat or vessel.

In testimony of which invention I hereunto set my hand.

JOHN OHRISTY.

Attest:

GEO. H. KNIGHT,

JAMES H. LAYMAN,

